1990 Audi 100 Q&A
1990 Audi 100 Question: where is the maintenance port for the a/c recharge?
One is on the low pressure side line the other is on the high pressure side line. Check by condensor, might be hidden by grille. - ziptie12
follow the a/c lines, you should find a schrader type valve or a quick disconnect valve... - your.mechanic